scholarly journals Change of effective surface area of solid preparation during dissolution process.

1987 ◽  
Vol 24 (2) ◽  
pp. 89-100
Author(s):  
Shigeru ITAI
Keyword(s):  
Surface Area ◽  
Dissolution Process ◽  
Effective Surface Area ◽  
Effective Surface

Novel Shell Stock–Recruitment Models for Crassostrea virginica as a Function of Regional Shell Effective Surface Area, A Missing Link for Sustainable Management

2020 ◽  
Vol 39 (3) ◽  
Author(s):  
Kathleen M. Hemeon ◽  
Kathy A. Ashton-Alcox ◽  
Eric N. Powell ◽  
Sara M. Pace ◽  
Leanne M. Poussard ◽  
...  
Keyword(s):  
Surface Area ◽  
Crassostrea Virginica ◽  
Sustainable Management ◽  
Effective Surface Area ◽  
Effective Surface ◽  
Missing Link ◽  
Stock Recruitment

scholarly journals Synthesis of a hierarchical nanoporous carbon material with controllable pore size and effective surface area for high-performance electrochemical capacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (24) ◽  
pp. 14516-14527 ◽  
Author(s):  
Bing Hu ◽  
Ling-Bin Kong ◽  
Long Kang ◽  
Kun Yan ◽  
Tong Zhang ◽  
...  
Keyword(s):  
Pore Size ◽  
Linear Relationship ◽  
Specific Capacitance ◽  
Surface Area ◽  
Carbon Material ◽  
High Performance ◽  
Electrode Materials ◽  
Effective Surface Area ◽  
Effective Surface ◽  
Nanoporous Carbon Material

There is an excellent linear relationship between E-SSA and specific capacitance of HNC-IPNs as electrode materials for EDLCs.

Microstructure and Gas Sensing Property of Porous SnO2 Sputtered Films

2007 ◽  
Vol 539-543 ◽  
pp. 3508-3513 ◽  
Author(s):  
Toshinari Yamazaki ◽  
Cheng Ji Jin ◽  
Yan Bai Shen ◽  
Toshio Kikuta ◽  
Noriyuki Nakatani
Keyword(s):  
Surface Area ◽  
Gas Sensing ◽  
Columnar Structure ◽  
Oxide Semiconductor ◽  
Bet Surface Area ◽  
Semiconductor Film ◽  
Effective Surface Area ◽  
Effective Surface ◽  
Discharge Gas ◽  
Film Porosity

It is often said that the sensitivity of a gas sensor made of an oxide semiconductor film is enhanced by making the film porous. However, the porosity of sensor films has not been sufficiently examined. In this study, SnO2 films were deposited using DC magnetron sputtering under various substrate temperatures and discharge gas pressures. In addition to the structural analysis by means of X-ray diffraction and scanning electron microscopy, the density and the BET surface area were measured to clarify the film porosity. The sensitivity to H2 gas of undoped and Pd-doped SnO2 films upon exposure to 1000 ppm H2 was measured at 300 . SnO2 films generally showed a columnar structure. The film deposited at a low temperature and a high pressure showed a low density and a large effective surface area. The H2 sensitivity increased as the density decreased, that is, as the effective surface area increased.

Day-To-Day Variability of Protein Transport Used as a Method for Analyzing Peritoneal Permeability in CAPD

1991 ◽  
Vol 11 (3) ◽  
pp. 217-223 ◽  
Author(s):  
Désirée Zemel ◽  
Raymond T. Krediet ◽  
Gerardus C.M. Koomen ◽  
Dirk G. Struijk ◽  
Lambertus Arisz
Keyword(s):  
Surface Area ◽  
Structural Changes ◽  
Protein Transport ◽  
Intrinsic Permeability ◽  
Effective Surface Area ◽  
Intraindividual Variation ◽  
Effective Surface ◽  
Peritoneal Surface ◽  
Beta 2 ◽  
Beta 2 Microglobulin

The transperitoneal transport of macromolecules is dependent on both effective peritoneal surface area and intrinsic permeability of the peritoneum. For passage of small solutes, the effective surface area is the main determinant. We hypothesized that day-to-day variations in peritoneal clearances are caused by changes in the effective surface area and not in the intrinsic permeability. Four CAPD {continuous ambulatory peritoneal dialysis) patients without peritonitis were investigated on 28 consecutive days. Concentrations of beta-2-microglobulin, albumin, IgG, and alpha-2-macroglobulin were determined daily in dialysate {night bags) and weekly in serum. Clearances and their coefficients of variation were calculated. Mean coefficients of the intraindividual variation of protein clearances increased, the higher the molecular weight: they ranged from 12% for beta-2microglobulin clearance to 22% for alpha-2-macroglobulin clearance. Correlations were present between the clearances of albumin, IgG, and alpha-2-macroglobulin, but not between any of these and beta-2-microglobulin clearance. In all patients, protein clearance {C) was a power function of the free diffusion coefficient in water {D) according to the equation: C=a. Db in which b represents the restriction coefficient of the peritoneum, and thus intrinsic permeability. The coefficient of variation of the restriction coefficient was low (range 4–6%). This supports our assumption that the intrinsic permeability is fairly constant on the short term. Day-to-day variations in protein clearances are thus mainly caused by alterations in the effective peritoneal surface area. Longterm follow-up of the restriction coefficient in individual patients might identify those at risk for the development of structural changes in the peritoneal membrane.

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